The OI Series High Power Optical Isolator is designed for high-power applications by guiding light in the normal direction while blocking back reflection in the reverse direction. With our proprietary in-fiber beam expansion technology that scales down the power density, these components can intrinsically handle optical power beyond 20W. With our proprietary magnetic-optics technology and proven advanced micro optics design, it features low insertion loss, high isolation, a compact structure, and high stability. They are tested under high power before shipping. This product has leading industrial performance. The OI isolator can be made using a variety of fibers including HI980, HI1060, LMA and other double cladding fibers. Customized designs are available to meet special applications.